0.1 kg/cm²
1 kg/cm²
100 kg/cm²
225.6 kg/cm²
D. 225.6 kg/cm²
Horizontal
Vertical
Inclined
Both horizontal and vertical
Increase thermal efficiency of boiler
Economise on fuel
Extract heat from the exhaust flue gases
Increase flue gas temperature
Initial conditions of steam
Back pressure
Initial pressure of steam
All of these
Steam jet
Centrifugal fan
Chimney
Both (A) and (B)
Avoid excessive build up of pressure
Avoid explosion
Extinguish fire if water level in the boiler falls below alarming limit
Control steam dome
Where low speeds are required
For small power purposes and low speeds
For large power purposes
For small power purposes and high speeds
Bleeding
Reheating
Governing
None of these
Locomotive boiler
Cochran boiler
Cornish boiler
Babcock and Wilcox boiler
Equal to
Less than
More than
None of these
Heat transfer takes place
Work is done by the expanding steam
Internal energy of steam changes
None of the above
373°K
273.16°K
303°K
0°K
Desirable
Economical
Essential
Uneconomical
Swept volume to the volume at cut-off
Volume at cut-off to the clearance volume
Volume at cut-off to the swept volume
Clearance volume to the volume at cut-off
In the drum
In the fire tubes
Above steam dome
Over the combustion chamber
Equal power developed in each cylinder for uniform turning moment
Equal initial piston loads on all pistons for obtaining same size of piston rod, connecting rod etc. for all cylinders
Equal temperature drop in each cylinder for economy of steam
All of the above
Increases
Decreases
Remains constant
None of these
10 atmospheres
20 atmospheres
30 atmospheres
40 atmospheres
Heat transfer takes place across cylinder walls
Work is done
Steam may be wet, dry or superheated after expansion
All of the above
Latent heat is zero
Liquid directly becomes steam
Specific volume of steam and liquid is same
This is the maximum pressure limit
Equal to
Less than
Higher than
None of these
0.1 to 0.2 kg
0.2 to 0.4 kg
0.6 to 0.8 kg
1.0 to 1.5 kg
Single tube, horizontal, internally fired and stationary boiler
Single tube, vertical, externally fired and stationary boiler
Multi-tubular, horizontal, internally fired and mobile boiler
Multi-tubular, horizontal, externally fired and stationary boiler
Boiler effectiveness
Boiler evaporative capacity
Factor of evaporation
Boiler efficiency
Heating the oil in the settling tanks
Cooling the oil in the settling tanks
Burning the oil
Suspension
Superheater
Air-preheater
Economiser
Injector
Boil
Flash i.e. get converted into steam
Remain as it was
Cool down
Horizontal
Vertical
Inclined
Horizontal and inclined
Pressure increases while velocity decreases
Pressure decreases while velocity increases
Pressure and velocity both decreases
Pressure and velocity both increases
4.75 mm
5.47 mm
7.45 mm
47.5 mm
And its corresponding conversion into dry saturated steam at 100°C and 1.033 kg/cm²
And its corresponding conversion into dry steam at desired boiler pressure
Conversion into steam at atmospheric condition
Conversion into steam at the same pressure at which feed water is supplied